CN105738214B - A kind of performance testing device and its application method of mine roof material reinforced material - Google Patents
A kind of performance testing device and its application method of mine roof material reinforced material Download PDFInfo
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- CN105738214B CN105738214B CN201610114276.1A CN201610114276A CN105738214B CN 105738214 B CN105738214 B CN 105738214B CN 201610114276 A CN201610114276 A CN 201610114276A CN 105738214 B CN105738214 B CN 105738214B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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Abstract
The invention discloses the performance testing devices and its application method of a kind of mine roof material reinforced material, including roadway system, carrier system, confining pressure loading system and axis press loading system, roadway system includes shell and the inner cavity that is surrounded by the shell, carrier system has supporting plate, the shape of supporting plate is the consistent arcuate surface of shape with practical top plate, carrier system is placed in the lower part of inner cavity, confining pressure loading system has telescopic confining pressure plate, confining pressure loading system encloses the side-walls in inner cavity, axis presses loading system to have shaft pressuring plate, axis pressure loading system is placed in the top of inner cavity, inner cavity, supporting plate, what confining pressure plate and shaft pressuring plate surrounded reinforcement material fills space.The shape that the present invention fills space sufficiently simulates the actual conditions of live top plate, by applying confining pressure and axial compressive force, to simulate the true ground stress environment of down-hole coal bed Strengthening Roof, to measure the true compressive property of test block, it avoids because ignoring crustal stress problem, and the rational evaluation of reinforcement material performance cannot be made.
Description
Technical field
The present invention relates to material properties test technical field, in particular to a kind of performance test of mine roof material reinforced material
Device and its application method.
Background technique
With the expansion of coal mining range and the increase of depth, unstable and extremely unstable fractured coal and rock and day are all
Increase, breaking roof easily causes roof collapse accident, brings and seriously threaten to coal mine downhole safety.
For coal and rock smashed to pieces, coal and rock improves Coal-body Structure smashed to pieces and its performance by slip casting, can be with
Roof accident is effectively solved to perplex to coal mine bring.The injecting paste material of superperformance has become the key for solving roof accident,
Injecting paste material of good performance also is being used successively at present, and the testing equipment of injecting paste material performance is examined to be not kept pace with the epoch
Paces.
Currently, the detection common way of injecting paste material performance is marked according to JC/T2041-2010 " polyurethane fill material "
Standard utilizes the mechanical property of servo pressure machine testing material.This method is simple, but this method cannot really reflect now
The actual environment of field, the small test block of selection are difficult to reflect the time of day after breaking roof slip casting.
In consideration of it, the present inventor develops performance testing device and its user of a kind of mine roof material reinforced material thus
Thus method, the effective solution above problem, this case generate.
Summary of the invention
The performance testing device and its application method of a kind of mine roof material reinforced material provided by the invention, pass through the performance
The test that test device carries out, more can really react stress state locating for breaking roof, effectively carry out reinforcing material
The performance test of material.
To achieve the goals above, technical scheme is as follows:
A kind of performance testing device of mine roof material reinforced material, including roadway system, carrier system, confining pressure loading system
Loading system is pressed with axis, roadway system includes shell and the inner cavity that is surrounded by the shell, is used to support the carrier system of test block
With supporting plate, the shape of supporting plate is and the consistent arcuate surface of shape of practical top plate, carrier system are placed in the lower part of inner cavity, are used for
The confining pressure loading system for applying confining pressure has telescopic confining pressure plate, and confining pressure loading system encloses the side-walls in inner cavity, for applying
Add the axis of axis pressure to press loading system that there is shaft pressuring plate, axis pressure loading system is placed in the top of inner cavity, inner cavity, supporting plate, confining pressure plate and
What shaft pressuring plate surrounded reinforcement material fills space.
The inner cavity of the roadway system is square structure, and intracavity bottom, which has, and the shape of practical top plate is consistent longitudinal encircles
The interlude in shape face, longitudinal arched face is and the consistent arch through-hole of pallet shape, the carrier system are placed under arch through-hole,
Supporting plate is placed in the arch through hole.
The shell is formed down two vertical supporting legs, the spacing and supporting plate width of two supporting legs in the two sides in longitudinal arched face
Unanimously, supporting plate is installed between two supporting legs and can move up and down along supporting leg；The carrier system further includes hydraulic lifting post, four cylinders
Synchronizer, pressure duct, supporting plate pressure gauge, supporting plate valve and pressurizing control system, the four corners of supporting plate are mounted on hydraulic liter
Column drops, and each hydraulic lifting post passes through four outlets connection of pressure duct and four cylinder synchronizers respectively, and four cylinder synchronizers enter
Mouth is then connected by another pressure duct with pressurizing control system, is equipped with supporting plate valve and supporting plate pressure on another pressure duct
Power table, supporting plate leave arch through-hole by hydraulic lifting post or flush with arch through-hole.
The confining pressure loading system includes being placed in two lateral confining pressure loading systems of inner cavity both lateral sides and being placed in inner cavity
The longitudinal confining pressure loading system of two of longitudinal two sides；Intracavity bottom includes the level in longitudinal arched face and longitudinal arched face two sides
Mounting surface, four angles of inner cavity are separately installed with longitudinal baffle and lateral partitions, horizontal mounting surface, intracavity sidewall and opposite two
Lateral partitions surround the area that is transversely mounted of lateral confining pressure loading system, horizontal mounting surface, intracavity sidewall and opposite two it is longitudinal every
Plate surrounds the longitudinally mounted area of longitudinal confining pressure loading system.
The lateral confining pressure loading system includes lateral confining pressure plate, laterally pressurize capsule and lateral water filling compression system, horizontal
It is placed between lateral confining pressure plate and intracavity sidewall to pressurization capsule, the capsule that laterally pressurizes is connected to laterally water filling compression system, horizontal
Lateral confining pressure plate transverse shifting is pushed after to pressurization capsule dilation by water injection；Longitudinal confining pressure loading system includes longitudinal confining pressure plate, indulges
To pressurization capsule and longitudinal water filling compression system, the lower end of longitudinal confining pressure plate and longitudinal pressing capsule has and longitudinal arched face shape
The corresponding arch hole of shape, longitudinal pressing capsule are placed between longitudinal confining pressure plate and intracavity sidewall, longitudinal pressing capsule and longitudinal note
Water compression system is connected to, and longitudinal confining pressure plate longitudinal movement is pushed after longitudinal pressing capsule dilation by water injection；Lateral confining pressure plate and longitudinal direction
Confining pressure plate collectively forms the confining pressure plate, and lateral confining pressure plate and/or longitudinal confining pressure plate have scalability.
The horizontal mounting surface is respectively transversely mounted at area and forms several transverse slipways being located at, and the lower end of lateral confining pressure plate is then
The horizontal concrete chute of respective numbers is formed, horizontal concrete chute is placed in transverse slipway；The horizontal mounting surface is positioned at each longitudinally mounted
Several end slipways are formed at area, the lower end of longitudinal confining pressure plate then forms the longitudinal chute of respective numbers, and longitudinal chute is placed in vertical
Into slideway.
The transverse direction confining pressure plate is placed between longitudinal confining pressure plate, and lateral confining pressure plate includes three sections to be fixed to each other, respectively
Described in being opened up on left transverse direction confining pressure plate, intermediate rubber plate and right lateral confining pressure plate, left transverse direction confining pressure plate and right lateral confining pressure plate
Several horizontal concrete chutes, the two sides of each horizontal concrete chute pass through adjustment spring and are equipped with baffle, transverse slipway be placed in two baffles it
Between.
The laterally water filling compression system includes lateral water pump, transverse pressure table, side overflow valve, lateral valve and transverse direction
High-pressure water pipe, lateral water pump pass through lateral high-pressure water pipe and are connected to laterally pressurization capsule, are equipped with transverse direction in lateral high-pressure water pipe
Pressure gauge, side overflow valve and lateral valve；Longitudinal water filling compression system includes longitudinal water pump, longitudinal pressure table, longitudinal direction
Overflow valve, longitudinal valve and longitudinal high-pressure water pipe, longitudinal water pump are connected to by longitudinal high-pressure water pipe with longitudinal pressing capsule, longitudinal
Longitudinal pressure table, longitudinal overflow valve and longitudinal valve are installed in high-pressure water pipe；Pacify respectively described two upper ends for being transversely mounted area
Equipped with transverse sealing plate, the upper end in the two longitudinally mounted area is separately installed with longitudinal sealing plate, and transverse sealing plate and longitudinal direction are close
It is corresponding on sealing plate to open up the perforation passed through for lateral high-pressure water pipe and longitudinal high-pressure water pipe respectively.
The axis pressure loading system further includes hydraulic device and hydraulic control system, and shaft pressuring plate and hydraulic device, which are fixed, to be connected
It connects, hydraulic control system controls hydraulic device work, and hydraulic device drive shaft pressuring plate pressurizes downwards or upward release.
A kind of application method of the performance testing device of mine roof material reinforced material, using steps are as follows:
(1) Preparatory work of experiment: the sundries in cleaning roadway system guarantees roadway system neat and tidy；
(2) equipment is installed: longitudinal confining pressure plate being placed on the longitudinal arched face in the longitudinally mounted area of roadway system, and is made to indulge
Match installation to sliding slot and end slipway；Lateral confining pressure plate is placed into the area that is transversely mounted in roadway system, and makes transverse direction
Sliding slot and transverse slipway match installation；Slidable adjustment transverse direction confining pressure plate or longitudinal confining pressure plate, make lateral confining pressure plate be in two vertical
To between confining pressure plate；Longitudinal pressing capsule is put between longitudinal confining pressure plate and intracavity sidewall, laterally pressurization capsule is put into cross
Unfold between confining pressure plate and intracavity sidewall, guaranteeing that longitudinal pressing capsule is placed with laterally pressurization capsule；By longitudinal sealing plate with
Transverse sealing plate is placed individually into above longitudinal pressing capsule and laterally pressurization capsule, and fixed, while by lateral high-pressure water pipe
Pass through perforation respectively with longitudinal high-pressure water pipe to be connected to lateral water pump and longitudinal water pump；
(3) it forms breaking roof: carrier system being placed between two supporting legs of roadway system, pressurizing control system is utilized
Supporting plate is risen to and is in sustained height with the arch through-hole of roadway system, supporting plate is made to seal arch through-hole, to form reinforcing
Material fills space；One layer of plastics of paving in space are filled what longitudinal confining pressure plate, lateral confining pressure plate, inner cavity and supporting plate were formed
Cloth, and make plastic cloth beyond confining pressure plate 5 ~ 10cm of top edge；According to natural grading, corresponding stone is selected, stone is put into modeling
In the space for expecting cloth formation, when stone height and confining pressure plate are substantially at sustained height, stop adding stone；
(4) confining pressure is loaded: first with laterally water filling compression system and longitudinal water filling compression system respectively to lateral pressurization
Water filling in capsule and longitudinal pressing capsule stops adding to longitudinal when all pressurization glue intraluminal pressures reach the half of setting value
The intracapsular water filling of moulding when laterally pressurization glue intraluminal pressure reaches setting value, then fills the water into longitudinal pressing capsule and reaches it
To setting value；
(5) slip casting: pass through grouting pipeline from injection experiments slurries at the top of stone, slurries to be tested using existing grouting pump
It rises to when enclosing platen elevation, stops slip casting；
(6) formed to be tested fast: controlling hydraulic device by hydraulic control system makes shaft pressuring plate apply axial pressure to stone
Power keeps axial compressive force and confining pressure constant in setting value when pressure reaches setting pressure；
(7) failure test: slip casting terminates, and after grout cures, carrier system is removed roadway system, is added again with axis pressure
Loading system, which applies axis straightening to test block to test block, to be destroyed, and records the size of axis pressure at this time, which is used as and measures test block
Practical compression strength.
After adopting the above scheme, the shape that the present invention fills space sufficiently simulates the actual conditions of live top plate, and is making
While making the test block of reinforcement material, that is, apply confining pressure and axial compressive force, to simulate truly answering for down-hole coal bed Strengthening Roof
Force environment increases axial compressive force then in the case where confining pressure is constant, until test block destroys, to measure the true of test block
Real compressive property.The present invention provides effective laboratory facilities for the performance of rationally assessment roof reinforcement material, avoids because ignoring
Crustal stress problem, and the rational evaluation of reinforcement material performance cannot be made.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment；
Fig. 2 is the structural schematic diagram of the present embodiment tunnel inner part；
Fig. 3 is the structural schematic diagram of the present embodiment roadway system；
Fig. 4 is the top view of the present embodiment roadway system；
Fig. 5 is the schematic diagram of the present embodiment carrier system；
Fig. 6 is the structural schematic diagram of the present embodiment transverse direction confining pressure plate；
Fig. 7 is the structural schematic diagram of the present embodiment longitudinal direction confining pressure plate；
Fig. 8 is the structural schematic diagram of the present embodiment transverse direction pressurization capsule；
Fig. 9 is the structural schematic diagram of the present embodiment longitudinal pressing capsule；
Figure 10 is the structural schematic diagram of the present embodiment transverse sealing plate；
Figure 11 is the structural schematic diagram of the present embodiment longitudinal sealing plate.
Label declaration
Roadway system 1, shell 11, inner cavity 12, longitudinal arched face 13, arch through-hole 14, supporting leg 15, horizontal mounting surface 16,
Longitudinal baffle 17, lateral partitions 18 are transversely mounted area 19, longitudinally mounted area 110, transverse slipway 111, end slipway 112；
Carrier system 2, supporting plate 21, hydraulic lifting post 22, four cylinder synchronizers 23, pressure duct 24, supporting plate pressure gauge 25, support
Plate valve door 26 and pressurizing control system 27；
Axis presses loading system 3, shaft pressuring plate 31, hydraulic device 32, hydraulic control system 33；
Lateral confining pressure loading system 4, lateral confining pressure plate 41, horizontal concrete chute 411, left transverse direction confining pressure plate 412, intermediate rubber plate
413, right transverse direction confining pressure plate 414, adjustment spring 415, baffle 416, laterally pressurize capsule 42, laterally fills the water compression system 43, horizontal
To water pump 431, transverse pressure table 432, side overflow valve 433, lateral valve 434, lateral high-pressure water pipe 435；
Longitudinal confining pressure loading system 5, longitudinal confining pressure plate 51, arch hole 511, longitudinal chute 512, longitudinal pressing capsule 52,
Longitudinal water filling compression system 53, longitudinal water pump 531, longitudinal pressure table 532, longitudinal overflow valve 533, longitudinal valve 534 and longitudinal direction
High-pressure water pipe 535；
Transverse sealing plate 6, longitudinal sealing plate 7, perforation 61.
Specific embodiment
In order to further explain the technical solution of the present invention, being explained in detail below by specific embodiment the present invention
It states.
It as shown in Figs. 1-2, is performance testing device and its use of a kind of mine roof material reinforced material that the present invention discloses
Method, including roadway system 1, carrier system 2, confining pressure loading system and axis press loading system 3.
In conjunction with shown in Fig. 3-4, roadway system 1 includes shell 11 and the inner cavity 12 surrounded by the shell 11, supporting plate system
System 2 has supporting plate 21, and the shape of supporting plate 21 is and the consistent arcuate surface of shape of practical top plate, carrier system 2 are placed in inner cavity 12
Lower part.
The structure as shown in figure 3, inner cavity 12 of roadway system 1 is square, 12 bottom of inner cavity have the shape with practical top plate
Consistent longitudinal arched face 13, the interlude in longitudinal arched face 13 are and the consistent arch through-hole 14 of 21 shape of supporting plate.Supporting plate system
System 2 is placed under arch through-hole 14, and supporting plate 21 is placed at the arch through-hole 14.
Shell 11 is formed down two vertical supporting legs 15, the spacing and supporting plate of two supporting legs 15 in the two sides in longitudinal arched face 13
21 equivalent widths, supporting plate 21 are installed between two supporting legs 15 and can move up and down along supporting leg 15.
As shown in figure 5, carrier system 2 further includes hydraulic lifting post 22, four cylinder synchronizers 23, pressure duct 24, supporting plate pressure
Power table 25, supporting plate valve 26 and pressurizing control system 27, the four corners of supporting plate 21 are mounted on hydraulic lifting post 22, each hydraulic
Respectively by four outlets connection of pressure duct 24 and four cylinder synchronizers 23, the entrance of four cylinder synchronizers 23 then leads to lifting column 22
It crosses another pressure duct 24 and pressurizing control system 27 connects, supporting plate valve 26 and supporting plate are installed on another pressure duct 24
Pressure gauge 25, supporting plate 21 are left arch through-hole 14 or are flushed with arch through-hole 14 by hydraulic lifting post 22.The size of pressure is logical
It is overpressurized the control of control system 27, specific pressure need to be more than or equal to following axial compressive forces, when preventing production test block, supporting plate
21 move down.
Confining pressure loading system has telescopic confining pressure plate, and confining pressure loading system is enclosed in the side-walls of inner cavity 12.Axis pressure adds
Loading system 3 has shaft pressuring plate 31, and axis pressure loading system 3 is placed in the top of inner cavity 12.Inner cavity 12, supporting plate 21, confining pressure plate and axis pressure
What plate 31 surrounded reinforcement material fills space.
In conjunction with shown in Fig. 1-2, confining pressure loading system includes being placed in two lateral confining pressure load systems of 12 both lateral sides of inner cavity
System 4 and two longitudinal confining pressure loading systems 5 for being placed in the longitudinal two sides in inner cavity 12.12 bottom of inner cavity is in longitudinal arched 13 two sides of face point
Two horizontal mounting surfaces 16 are not formed.Four angles of inner cavity 12 are separately installed with longitudinal baffle 17 and lateral partitions 18.It is horizontally mounted
What face 16,12 side wall of inner cavity and two opposite lateral partitions 18 surrounded lateral confining pressure loading system 4 is transversely mounted area 19, level peace
Dress face 16,12 side wall of inner cavity and two opposite longitudinal baffles 17 surround the longitudinally mounted area 110 of longitudinal confining pressure loading system 5.
Wherein transverse direction confining pressure loading system 4 includes lateral confining pressure plate 41, laterally pressurization capsule 42 and lateral water filling compression train
System 43.Laterally pressurization capsule 42 is placed between 12 side wall of lateral confining pressure plate 41 and inner cavity, laterally pressurize capsule 42 and laterally water filling
Compression system 43 is connected to, and lateral 41 transverse shifting of confining pressure plate is pushed after 42 dilation by water injection of capsule that laterally pressurizes, carries out lateral pressurization
Or release.Laterally the structural schematic diagram of pressurization capsule 42 is as shown in Figure 8.Two of them transverse direction confining pressure loading system 4 can share one
A laterally water filling compression system 43.
Longitudinal confining pressure loading system 5 includes longitudinal confining pressure plate 51, longitudinal pressing capsule 52 and longitudinal water filling compression system 53.
In conjunction with shown in Fig. 7 and Fig. 9, longitudinal confining pressure plate 51 has corresponding with longitudinal arched 13 shape of face with the lower end of longitudinal pressing capsule 52
Arch hole 511.Longitudinal pressing capsule 52 is placed between 12 side wall of longitudinal confining pressure plate 51 and inner cavity, longitudinal pressing capsule 52 and vertical
It is connected to water filling compression system 53, pushes longitudinal confining pressure plate 51 to vertically move after 52 dilation by water injection of longitudinal pressing capsule, indulged
To pressurization or release.The structural schematic diagram of longitudinal pressing capsule 52 is as shown in Figure 9.Two of them longitudinal direction confining pressure loading system 5 can
Share a longitudinal water filling compression system 53.
As shown in Figure 4 and Figure 6, above-mentioned horizontal mounting surface 16 is transversely mounted at area 19 and forms several transverse slipways being located at two
111, the lower end of lateral confining pressure plate 41 then forms the horizontal concrete chute 411 of respective numbers, and horizontal concrete chute 411 is placed in transverse slipway 111
On, keep lateral confining pressure plate 41 accurately mobile in transverse direction, to control the tilt quantity of lateral confining pressure plate 41, prevents test block
By uneven horizontal pressure.
As shown in figs. 4 and 7, above-mentioned horizontal mounting surface 16 is forming several longitudinally cunnings at two longitudinally mounted areas 110
The lower end in road 112, longitudinal confining pressure plate 51 then forms the longitudinal chute 512 of respective numbers, and longitudinal chute 512 is placed in end slipway
In 112.
Lateral confining pressure plate 41 and longitudinal confining pressure plate 51 collectively form above-mentioned confining pressure plate, lateral confining pressure plate 41 and/or longitudinal direction
Confining pressure plate 51 has scalability.The present embodiment is since longitudinal 51 lower part of confining pressure plate has arch hole 511, even if longitudinal confining pressure plate
51 have scalability, and flexible range is also smaller, and the present embodiment preferentially selects the lateral confining pressure with scalability thus
Plate 41.
The lateral confining pressure plate 41 of the present embodiment divides for be fixed to each other three sections, respectively left lateral confining pressure plate 412, intermediate rubber
Offset plate 413 and right lateral confining pressure plate 414, the scalability of lateral confining pressure plate 41 is realized by intermediate rubber plate 413.When installation,
Lateral confining pressure plate 41 is placed between two longitudinal confining pressure plates 51, when pressurization, when longitudinal confining pressure plate 51 inwardly squeezes, lateral confining pressure plate
414 are extruded shortening therewith, while lateral confining pressure plate 414 can be along longitudinal confining pressure plate 51 to also inwardly squeezing, to form cross
To the confining pressure with longitudinal direction.Due to the scalability of lateral confining pressure plate 414, spacing can also occur between two horizontal concrete chutes 411
The two sides of variation, each horizontal concrete chute 411 opened up on left lateral confining pressure plate 412 and right lateral confining pressure plate 414 thus are logical
It overregulates spring 415 and baffle 416 is installed, transverse slipway 111 is placed between two baffles 416 of horizontal concrete chute 411, passes through adjusting
The adjustment effect of spring 415 flexibly changes the distance between two baffles 416, to guarantee that horizontal concrete chute 411 is always and lateral
Slideway 111 matches.
Above-mentioned laterally water filling compression system 43 includes lateral water pump 431, transverse pressure table 432, side overflow valve 433, cross
To valve 434 and lateral high-pressure water pipe 435, lateral water pump 431 passes through lateral high-pressure water pipe 435 and laterally pressurization capsule 42 connects
It is logical, transverse pressure table 432, side overflow valve 433 and lateral valve 434 are installed, by laterally overflowing in lateral high-pressure water pipe 435
It flows valve 433 and lateral valve 434 controls the pressure size of high pressure water.
Longitudinal water filling compression system 53 includes longitudinal water pump 531, longitudinal pressure table 532, longitudinal overflow valve 533, longitudinal valve
Door 534 and longitudinal high-pressure water pipe 535, longitudinal water pump 531 are connected to by longitudinal high-pressure water pipe 535 with longitudinal pressing capsule 52, are indulged
Longitudinal pressure table 532, longitudinal overflow valve 533 and longitudinal valve 534 are installed in high-pressure water pipe 535, pass through longitudinal overflow valve
533 control the pressure size of high pressure water with longitudinal valve 534.
Wherein two upper ends for being transversely mounted area 19 are separately installed with transverse sealing plate 6, the upper end point in two longitudinally mounted areas 110
Longitudinal sealing plate 7 is not installed.It is corresponding on transverse sealing plate 6 and longitudinal sealing plate 7 to be opened up respectively for lateral high-pressure water pipe 435
The perforation 61 passed through with longitudinal high-pressure water pipe 535, transverse sealing plate 6 and longitudinal sealing plate 7 are as shown in Figure 10 and Figure 11 respectively.
Above-mentioned axis pressure loading system 3 further includes hydraulic device 32 and hydraulic control system 33, shaft pressuring plate 31 and hydraulic device
32 are fixedly connected, hydraulic control system 33 control hydraulic device 32 work, hydraulic device 32 drive shaft pressuring plate 31 downwards pressurization or
Upward release controls the axial compressive force size of test block by hydraulic control system 33.
The application method of the performance testing device of above-mentioned mine roof material reinforced material is as follows.
(1) Preparatory work of experiment: the sundries in cleaning roadway system 1 guarantees 1 neat and tidy of roadway system,.
(2) equipment is installed: longitudinal confining pressure plate 51 is placed into the longitudinal arched face in the longitudinally mounted area 110 of roadway system 1
On 13, and make longitudinal chute 512 and end slipway 112 matches installation.Lateral confining pressure plate 41 is placed into roadway system 1
It is transversely mounted area 19, and makes horizontal concrete chute 411 and transverse slipway 111 matches installation.
Manual slidable adjustment transverse direction confining pressure plate 41 or longitudinal confining pressure plate 51, make lateral confining pressure plate 41 be in two longitudinal confining pressure plates
Between 51.Longitudinal pressing capsule 52 is put between 12 side wall of longitudinal confining pressure plate 51 and inner cavity, laterally pressurization capsule 42 is put into
Guarantee longitudinal pressing capsule 52 between 12 side wall of lateral confining pressure plate 41 and inner cavity, when placement and laterally pressurization capsule 42 is placed and relaxed
Pressure can effectively be passed to confining pressure plate when guaranteeing that pressurization capsule swells by exhibition.Then by longitudinal sealing plate 7 and transverse sealing
Plate 6 is placed individually into longitudinal pressing capsule 52 and laterally pressurization capsule 42 top, and fixed, while by lateral high-pressure water pipe 435
It is connected to respectively by perforation 61 with lateral water pump 431 and longitudinal water pump 531 with longitudinal high-pressure water pipe 535.
(3) it forms breaking roof: carrier system 2 being placed between two supporting legs 15 of roadway system 1, pressurized control is utilized
Supporting plate 21 is risen to and is in sustained height with the arch through-hole 14 of roadway system 1 by system 27, and supporting plate 21 is made to seal arch through-hole
14, finally surround reinforcement material fills space.
One layer of plastics of paving in space are filled what longitudinal confining pressure plate 51, lateral confining pressure plate 41, inner cavity 12 and supporting plate 21 were formed
Cloth, and make plastic cloth beyond confining pressure plate 5 ~ 10cm of top edge.Then according to natural grading, corresponding stone 8 is selected, by stone 8
It is put into the space of plastic cloth formation, when 8 height of stone is substantially at sustained height with confining pressure plate, stops adding stone 8.
(4) confining pressure is loaded: first with laterally water filling compression system 43 and longitudinal water filling compression system 53 respectively to transverse direction
Water filling in pressurization capsule 42 and longitudinal pressing capsule 52.When all pressurization glue intraluminal pressures reach the half of setting value, stop
It is filled the water into longitudinal pressing capsule 52, continues to add transverse pressure.When pressure reaches setting value in laterally pressurization capsule 42, then to
It is filled the water in longitudinal pressing capsule 52 and reaches setting value.Under setting value base area depending on the pressure of actual conditions.
(5) slip casting: using existing grouting pump by grouting pipeline from 8 top injection experiments slurries of stone, wait test slurry
Liquid rises to when enclosing platen elevation, stops slip casting.
(6) formed to be tested fast: controlling hydraulic device 32 by hydraulic control system 33 applies shaft pressuring plate 31 to stone 8
Axial compressive force keeps axial compressive force and confining pressure constant in setting value when pressure reaches setting pressure.
(7) failure test: slip casting terminates, for example, 24 hours after grout cures, by carrier system 2 remove roadway system 1,
Apply axis straightening to test block to test block with axis pressure loading system 3 again to destroy, records the size of axis pressure at this time, the size
As the practical maximum compressive strength for measuring test block.
The foregoing is merely a prefered embodiment of the invention, not to the restriction of protection scope of the present invention.All setting according to this case
The equivalent variations that meter thinking is done, each falls within the protection scope of this case.
Claims (10)
1. a kind of performance testing device of mine roof reinforcement material, it is characterised in that: including roadway system, carrier system, enclose
Loading system and axis is pressed to press loading system, roadway system includes shell and the inner cavity that is surrounded by the shell, is used to support test block
Carrier system there is supporting plate, the shape of supporting plate is and the consistent arcuate surface of shape of practical top plate, carrier system are placed in inner cavity
Lower part, the confining pressure loading system for applying confining pressure has telescopic confining pressure plate, and confining pressure loading system encloses in the side of inner cavity
At wall, the axis for applying axis pressure presses loading system to have shaft pressuring plate, and axis pressure loading system is placed in the top of inner cavity, inner cavity, support
What plate, confining pressure plate and shaft pressuring plate surrounded reinforcement material fills space；Intracavity bottom has consistent vertical with the shape of practical top plate
To arcuate surface, the shell is formed down two vertical supporting legs in the two sides in longitudinal arched face, and the spacing and supporting plate of two supporting legs are wide
Degree is consistent, and supporting plate is installed between two supporting legs and can move up and down along supporting leg.
2. a kind of performance testing device of mine roof reinforcement material as described in claim 1, it is characterised in that: the tunnel
The inner cavity of system is square structure, and the interlude in longitudinal arched face is and pallet shape consistent arch through-hole the supporting plate system
System is placed under arch through-hole, and supporting plate is placed in the arch through hole.
3. a kind of performance testing device of mine roof reinforcement material as claimed in claim 2, it is characterised in that: the supporting plate
System further includes hydraulic lifting post, four cylinder synchronizers, pressure duct, pressure gauge, valve and pressurizing control system, the quadrangle of supporting plate
Place is mounted on hydraulic lifting post, and each hydraulic lifting post passes through pressure duct respectively and four outlets of four cylinder synchronizers connect
It connects, the entrance of four cylinder synchronizers then passes through another pressure duct and connects with pressurizing control system, installs on another pressure duct
There are valve and pressure gauge, supporting plate leaves arch through-hole by hydraulic lifting post or flushes with arch through-hole.
4. a kind of performance testing device of mine roof reinforcement material as described in claim 1, it is characterised in that: the confining pressure
Loading system include be placed in two of inner cavity both lateral sides lateral confining pressure loading systems and be placed in two of inner cavity longitudinal direction two sides it is vertical
To confining pressure loading system；Intracavity bottom includes the horizontal mounting surface in longitudinal arched face and longitudinal arched face two sides, and the four of inner cavity
A angle is separately installed with longitudinal baffle and lateral partitions, and horizontal mounting surface, intracavity sidewall and two opposite lateral partitions surround cross
To the area that is transversely mounted of confining pressure loading system, horizontal mounting surface, intracavity sidewall and two opposite longitudinal baffles surround longitudinal confining pressure
The longitudinally mounted area of loading system.
5. a kind of performance testing device of mine roof reinforcement material as claimed in claim 4, it is characterised in that: the transverse direction
Confining pressure loading system includes lateral confining pressure plate, laterally pressurization capsule and lateral water filling compression system, and the capsule that laterally pressurizes is placed in cross
It is connected to capsule between confining pressure plate and intracavity sidewall, is laterally pressurizeed with laterally water filling compression system, capsule water filling of laterally pressurizeing is swollen
Lateral confining pressure plate transverse shifting is pushed after swollen；Longitudinal confining pressure loading system includes longitudinal confining pressure plate, longitudinal pressing capsule and longitudinal direction
The lower end of water filling compression system, longitudinal confining pressure plate and longitudinal pressing capsule has and the corresponding arch hole of longitudinal arched face shape,
Longitudinal pressing capsule is placed between longitudinal confining pressure plate and intracavity sidewall, and longitudinal pressing capsule is connected to longitudinal water filling compression system,
Longitudinal confining pressure plate longitudinal movement is pushed after longitudinal pressing capsule dilation by water injection；Lateral confining pressure plate and longitudinal confining pressure plate collectively form institute
The confining pressure plate stated, lateral confining pressure plate and/or longitudinal confining pressure plate have scalability.
6. a kind of performance testing device of mine roof reinforcement material as claimed in claim 5, it is characterised in that: the level
Mounting surface is respectively transversely mounted at area and forms several transverse slipways being located at, and the lower end of lateral confining pressure plate then forms the cross of respective numbers
To sliding slot, horizontal concrete chute is placed in transverse slipway；The horizontal mounting surface is forming several longitudinal directions at each longitudinally mounted area
The lower end of slideway, longitudinal confining pressure plate then forms the longitudinal chute of respective numbers, and longitudinal chute is placed in end slipway.
7. a kind of performance testing device of mine roof reinforcement material as claimed in claim 6, it is characterised in that: the transverse direction
Confining pressure plate is placed between longitudinal confining pressure plate, and lateral confining pressure plate includes three sections to be fixed to each other, respectively left lateral confining pressure plate, centre
Several horizontal concrete chutes are opened up on rubber slab and right lateral confining pressure plate, left transverse direction confining pressure plate and right lateral confining pressure plate, each
The two sides of horizontal concrete chute pass through adjustment spring and are equipped with baffle, and transverse slipway is placed between two baffles.
8. a kind of performance testing device of mine roof reinforcement material as claimed in claim 5, it is characterised in that: the transverse direction
Filling the water compression system includes lateral water pump, transverse pressure table, side overflow valve, lateral valve and lateral high-pressure water pipe, lateral water
Pump is connected to by lateral high-pressure water pipe with laterally pressurization capsule, and transverse pressure table, side overflow are equipped in lateral high-pressure water pipe
Valve and lateral valve；Longitudinal water filling compression system includes longitudinal water pump, longitudinal pressure table, longitudinal overflow valve, longitudinal valve
With longitudinal high-pressure water pipe, longitudinal water pump is connected to longitudinal pressing capsule by longitudinal high-pressure water pipe, is installed on longitudinal high-pressure water pipe
There are longitudinal pressure table, longitudinal overflow valve and longitudinal valve；Described two upper ends for being transversely mounted area are separately installed with transverse sealing plate,
The upper end in the two longitudinally mounted area is separately installed with longitudinal sealing plate, corresponding difference on transverse sealing plate and longitudinal sealing plate
Open up the perforation passed through for lateral high-pressure water pipe and longitudinal high-pressure water pipe.
9. a kind of performance testing device of mine roof reinforcement material as described in claim 1, it is characterised in that: the axis pressure
Loading system further includes hydraulic device and hydraulic control system, and shaft pressuring plate is fixedly connected with hydraulic device, hydraulic control system control
Hydraulic device work processed, hydraulic device drive shaft pressuring plate pressurizes downwards or upward release.
10. a kind of application method of the performance testing device of mine roof reinforcement material, which is characterized in that using steps are as follows:
(1) Preparatory work of experiment: the sundries in cleaning roadway system guarantees roadway system neat and tidy；
(2) equipment is installed: longitudinal confining pressure plate being placed on the longitudinal arched face in the longitudinally mounted area of roadway system, and is made longitudinal cunning
Slot and end slipway match installation；Lateral confining pressure plate is placed into the area that is transversely mounted in roadway system, and makes horizontal concrete chute
Match installation with transverse slipway；Slidable adjustment transverse direction confining pressure plate or longitudinal confining pressure plate make lateral confining pressure plate be in two longitudinal directions and enclose
Between pressing plate；Longitudinal pressing capsule is put between longitudinal confining pressure plate and intracavity sidewall, laterally pressurization capsule is put into and is laterally enclosed
Between pressing plate and intracavity sidewall, guarantees longitudinal pressing capsule and capsule placement of laterally pressurizeing is unfolded；By longitudinal sealing plate and transverse direction
Sealing plate is placed individually into above longitudinal pressing capsule and lateral pressurization capsule, and fixed, while by lateral high-pressure water pipe and being indulged
Pass through perforation respectively to high-pressure water pipe to be connected to lateral water pump and longitudinal water pump；
(3) it forms breaking roof: carrier system is placed between two supporting legs of roadway system, will be held in the palm using pressurizing control system
Plate, which rises to, is in sustained height with the arch through-hole of roadway system, so that supporting plate is sealed arch through-hole, to form reinforcement material
Fill space；In the one layer of plastic cloth of paving in space that fill of longitudinal confining pressure plate, lateral confining pressure plate, inner cavity and supporting plate formation, and
Make plastic cloth beyond confining pressure plate 5 ~ 10cm of top edge；According to natural grading, corresponding stone is selected, stone is put into plastic cloth shape
At space in, when stone height and confining pressure plate are substantially at sustained height, stop plus stone；
(4) confining pressure is loaded: first with laterally water filling compression system and longitudinal water filling compression system respectively to the capsule that laterally pressurizes
It fills the water in longitudinal pressing capsule, when all pressurization glue intraluminal pressures reach the half of setting value, stops to longitudinal pressing glue
Intracapsular water filling when laterally pressurization glue intraluminal pressure reaches setting value, then is filled the water and is reached into longitudinal pressing capsule and set
Definite value；
(5) slip casting: using existing grouting pump by grouting pipeline from injection experiments slurries at the top of stone, slurries to be tested are risen to
When enclosing platen elevation, stop slip casting；
(6) formed to be tested fast: controlling hydraulic device by hydraulic control system makes shaft pressuring plate apply axial compressive force to stone, to
When pressure reaches setting pressure, keep axial compressive force and confining pressure constant in setting value；
(7) failure test: slip casting terminates, and after grout cures, carrier system is removed roadway system, presses load system with axis again
System, which applies axis straightening to test block to test block, to be destroyed, and records the size of axis pressure at this time, the size is as the reality for measuring test block
Border compression strength.
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| CN201610114276.1A CN105738214B (en) | 2016-03-01 | 2016-03-01 | A kind of performance testing device and its application method of mine roof material reinforced material |
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| CN201610114276.1A CN105738214B (en) | 2016-03-01 | 2016-03-01 | A kind of performance testing device and its application method of mine roof material reinforced material |
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| CN106596279B (en) * | 2016-12-07 | 2020-02-07 | 中国矿业大学(北京) | Mine roof pressure simulation test device |
| CN108761040A (en) * | 2018-06-04 | 2018-11-06 | 龙岩学院 | Slurry filling imitation device with pressure and its application method in a kind of restricted clearance |
| CN109236243B (en) * | 2018-11-02 | 2023-11-14 | 广州海洋地质调查局 | Three-dimensional comprehensive reservoir hydrate simulation analysis system and analysis method |
| CN113654817A (en) * | 2021-07-20 | 2021-11-16 | 中国矿业大学 | Multifunctional three-dimensional similar material simulation test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87203178U (en) * | 1987-04-16 | 1987-11-25 | 东北工学院 | Three-axle pressure chamber |
| JP3923954B2 (en) * | 2004-03-31 | 2007-06-06 | 飛島建設株式会社 | Consolidation permeability test apparatus and test method |
| CN101893415A (en) * | 2010-04-20 | 2010-11-24 | 中矿金业股份有限公司 | Blasting method by arch roof control and smooth-surface pillar control |
| CN102465706B (en) * | 2010-11-04 | 2014-04-09 | 中国有色矿业集团有限公司 | Digging method for vein-following developing roadway of inclined stratified rock body |
| CN103018152A (en) * | 2012-12-20 | 2013-04-03 | 湖南科技大学 | Indoor grouting testing device under simulation of complex stress effect and testing method thereof |
| CN103267722B (en) * | 2013-05-07 | 2015-08-12 | 中国矿业大学 | A kind of pressure-bearing osmotic grouting reinforcement experiment device and method |
| CN104594926A (en) * | 2014-11-27 | 2015-05-06 | 太原理工大学 | Rapid composite roof roadway support method for high-stress water guiding karst cave group |
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